以Co,Sb和Fe粉为原料,采用放电等离子烧结(SPS)技术在300～600℃温度范周内研究原位反应合成富Co基Skutterudite化合物FexCo4-xSb12 (x=0～1.0)的合成条件,并对化合物的结构、微观形貌及热电性能进行研究.结果表明:在x=0～1.0范围内,300℃时开始生成少量的FexCo4～xSb12:在400～600℃范围内,FexCo4-xSb12相为主晶相,并伴有极少量Sb相;化合物的晶格常数随Fe含量的增加而线性增加;在600℃合成的FexCo4-xSb12化合物,当Fe含量小于0.3时,基本上以规则的颗粒和柱状晶生长,当Fe含量x大于0.3时,随着Fe含量的增加,颗粒和柱状晶减少,趋向于弯曲枝状晶生长;FexCo4-xSb12的电导率随着Fe置换量的增加而增加,Seebeck系数和功率因子的极值随着Fe置换量的增加而向高温方向移动.
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